Download or read book A Design of Experiments Study of Procedure for Assembling Bascule Bridge Fulcrum written by Cuong Q. Nguyen and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: A bascule bridge is a type of movable bridge that can be opened or closed to facilitate the movement of water-borne traffic such as ships and yachts. Trunnion-Hub-Girder (THG) assembly plays a role as a fulcrum in the bascule bridge. To make the fulcrum, the trunnion is shrink-fitted into the hub, and then the trunnion-hub assembly is shrink-fitted into the girder. Hundreds of thousands of dollars could be lost due to failures during this step. Crack formations in the hubs of various Florida bascule bridges during assembly led the Florida Department of Transportation to commission a project with USF professors to investigate. Finite elements method (ANSYS package) is employed to model the THG assembly procedure and solve for the critical crack length and critical stress in this transient thermal structural problem. Design of experiments (DOE) is used with different cooling processes and the geometrical dimensions of the THG assembly to find the sensitivity of these parameters on the outputs. The influence of the hub outer diameter and the radial interference (between the trunnion and hub) is at different levels on the critical crack length and the stress ratio as it is dependent on fulcrum geometry. If we include four staged cooling methods as follow Type 1: liquid nitrogen Type 2: dry-ice/ alcohol bath followed by liquid nitrogen Type 3: refrigerated air chamber followed by liquid nitrogen Type 4: refrigerated air chamber followed by dry-ice/alcohol bath and then by liquid nitrogenthe cooling type factor contributes the most to both critical crack length (up to 79%) and the stress ratio (up to 84%) in the TH assembling procedures in all three considered bascule bridges. The staged cooling procedure type 2, which is, immersing the TH assembly into the dry ice medium, followed by immersing the TH set into the liquid nitrogen, give larger critical crack length (up to 400%) and stress ratio (up to 87%) compared to the case that used only liquid nitrogen.
Download or read book Sensitivity Analysis of Three Assembly Procedures for a Bascule Bridge Fulcrum written by Luke Allen Snyder and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: Many different hub assembly procedures have been utilized over the years in bascule bridge construction. The first assembly procedure (AP1) involves shrink fitting a trunnion component into a hub, followed by the shrink fitting of the entire trunnion-hub (TH) assembly into the girder of the bridge. The second assembly procedure (AP2) involves shrink fitting the hub component first into the girder, then shrink fitting the trunnion component into the hub-girder (HG) assembly. The final assembly procedure uses a warm shrink fitting process whereby induction coils are placed on the girder of the bridge and heat is applied until sufficient thermal expansion of the girder hole allows for insertion of the hub component. All three assembly procedures use a cooling method at some stage of the assembly procedure to contract components to allow the insertion of one part into the next. Occasionally, during these cooling and heating procedures, cracks can develop in the material due to the large thermal shock and subsequent thermal stresses. Previous works conducted a formal design of experiments analysis on AP1 to determine the overall effect of various factors on the critical design parameters, overall minimum stress ratio (OMSR) and overall minimum critical crack length (OMCCL). This work focuses on conducting a formal design of experiments analysis on AP1, AP2 and AP3 using the same cooling methods and parameters as in previous studies with the addition of the bridge size as a factor in the experiment. The use of the medium bridge size in AP1 yields the largest OMCCL values of any bridge and the second largest OMSR values. The large bridge size has the largest OMSR values versus all factors for AP1. The OMCCL and OMSR increases for every bridge size with an increase in the alpha ratio for AP1. The smallest bridge showed the largest OMCCL and OMSR values for every cooling method and every alpha ratio for AP2 and AP3. The OMCCL and OMSR decrease for every bridge size with an increase in the alpha ratio for AP2 and AP3.
Download or read book Mechanics of Composite Materials written by Autar K. Kaw and published by CRC Press. This book was released on 2005-11-02 with total page 491 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1997, Dr. Kaw introduced the first edition of Mechanics of Composite Materials, receiving high praise for its comprehensive scope and detailed examples. He also introduced the groundbreaking PROMAL software, a valuable tool for designing and analyzing structures made of composite materials. Updated and expanded to reflect recent advances in the
Download or read book Magic Stage Illusions and Scientific Diversions Including Trick Photography written by Albert A. Hopkins and published by DigiCat. This book was released on 2022-09-16 with total page 509 pages. Available in PDF, EPUB and Kindle. Book excerpt: DigiCat Publishing presents to you this special edition of "Magic, Stage Illusions and Scientific Diversions, Including Trick Photography" by Albert A. Hopkins. DigiCat Publishing considers every written word to be a legacy of humankind. Every DigiCat book has been carefully reproduced for republishing in a new modern format. The books are available in print, as well as ebooks. DigiCat hopes you will treat this work with the acknowledgment and passion it deserves as a classic of world literature.
Download or read book Artificial Intelligence in Society written by OECD and published by OECD Publishing. This book was released on 2019-06-11 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: The artificial intelligence (AI) landscape has evolved significantly from 1950 when Alan Turing first posed the question of whether machines can think. Today, AI is transforming societies and economies. It promises to generate productivity gains, improve well-being and help address global challenges, such as climate change, resource scarcity and health crises.
Download or read book Railway Construction written by William Hemingway Mills and published by . This book was released on 1898 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Buyology written by Martin Lindstrom and published by Currency. This book was released on 2010-02-02 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: NEW YORK TIMES BESTSELLER • “A fascinating look at how consumers perceive logos, ads, commercials, brands, and products.”—Time How much do we know about why we buy? What truly influences our decisions in today’s message-cluttered world? In Buyology, Martin Lindstrom presents the astonishing findings from his groundbreaking three-year, seven-million-dollar neuromarketing study—a cutting-edge experiment that peered inside the brains of 2,000 volunteers from all around the world as they encountered various ads, logos, commercials, brands, and products. His startling results shatter much of what we have long believed about what captures our interest—and drives us to buy. Among the questions he explores: • Does sex actually sell? • Does subliminal advertising still surround us? • Can “cool” brands trigger our mating instincts? • Can our other senses—smell, touch, and sound—be aroused when we see a product? Buyology is a fascinating and shocking journey into the mind of today's consumer that will captivate anyone who's been seduced—or turned off—by marketers' relentless attempts to win our loyalty, our money, and our minds.
Download or read book Bridge and Highway Structure Rehabilitation and Repair written by Mohiuddin A. Khan and published by McGraw Hill Professional. This book was released on 2010-02-08 with total page 657 pages. Available in PDF, EPUB and Kindle. Book excerpt: State-of-the-Art Bridge and Highway Rehabilitation and Repair Methods This authoritative volume offers up-to-date guidance on the latest design techniques, repair methods, specialized software, materials, and advanced maintenance procedures for bridges and highway structures. Focusing on both traditional and nontraditional design issues, Bridge and Highway Structure Rehabilitation and Repair clarifies the most recent AASHTO bridge design codes and discusses new analytical and design methodologies, such as the application of load and resistance factor design (LRFD). A wealth of concise explanations, solved examples, and in-depth case studies are included in this comprehensive resource. COVERAGE INCLUDES: Diagnostic design and selective reconstruction Bridge failure studies and safety engineering Analytical approach to fracture and failure Load and resistance factor rating (LRFR) and redesign Application of LRFD and LRFR methods Inspection and structural health monitoring Bridge widening and replacement strategies Conventional repair methods Advanced repair methods Concrete repair methods Extreme events of flood scour and countermeasures design Guidelines for seismic design and retrofit methods
Download or read book English Ido Dictionary written by Luther H. Dyer and published by . This book was released on 1924 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dictionary of Building and Civil Engineering written by Don Montague and published by Taylor & Francis. This book was released on 1996 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dual-language dictionary lists over 20,000 specialist terms in both French and English, covering architecture, building, engineering and property terms. It meets the needs of all building professionals working on projects overseas. It has been comprehensively researched and compiled to provide an invaluable reference source in an increasingly European marketplace.
Download or read book Staging Urban Landscapes written by B. Cannon Ivers and published by Birkhäuser. This book was released on 2018-10-08 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Open urban spaces are an ideal stage for public events. An important prerequisite for their design in an increasingly heterogeneous multicultural cityscape is the relationship between design, use, and social function.The book documents both temporary as well as permanent installations of various kinds – from the open-air courtyard of a museum to the design of a river bank promenade, through to a city park.
Download or read book Bridge Design written by António J. Reis and published by John Wiley & Sons. This book was released on 2019-06-17 with total page 549 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive guide to bridge design Bridge Design - Concepts and Analysis provides a unique approach, combining the fundamentals of concept design and structural analysis of bridges in a single volume. The book discusses design solutions from the authors’ practical experience and provides insights into conceptual design with concrete, steel or composite bridge solutions as alternatives. Key features: Principal design concepts and analysis are dealt with in a unified approach. Execution methods and evolution of the static scheme during construction are dealt with for steel, concrete and composite bridges. Aesthetics and environmental integration of bridges are considered as an issue for concept design. Bridge analysis, including modelling and detail design aspects, is discussed for different bridge typologies and structural materials. Specific design verification aspects are discussed on the basis of present design rules in Eurocodes. The book is an invaluable guide for postgraduate students studying bridge design, bridge designers and structural engineers.
Download or read book Easy Electronics written by Charles Platt and published by Maker Media, Inc.. This book was released on 2017-11-21 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the simplest, quickest, least technical, most affordable introduction to basic electronics. No tools are necessary--not even a screwdriver. Easy Electronics should satisfy anyone who has felt frustrated by entry-level books that are not as clear and simple as they are supposed to be. Brilliantly clear graphics will take you step by step through 12 basic projects, none of which should take more than half an hour. Using alligator clips to connect components, you see and hear immediateresults. The hands-on approach is fun and intriguing, especially for family members exploring the projects together. The 12 experiments will introduce you to switches, resistors, capacitors, transistors, phototransistors, LEDs, audio transducers, and a silicon chip. You'll even learn how to read schematics by comparing them with the circuits that you build. No prior knowledge is required, and no math is involved. You learn by seeing, hearing, and touching. By the end of Experiment 12, you may be eager to move on to a more detailed book. Easy Electronics will function perfectly as a prequel to the same author's bestseller, Make: Electronics. All the components listed in the book are inexpensive and readily available from online sellers. A very affordable kit has been developed in conjunction with the book to eliminate the chore of shopping for separate parts. A QR code inside the book will take you to the vendor's web site. Concepts include: Transistor as a switch or an amplifier Phototransistor to function as an alarm Capacitor to store and release electricity Transducer to create sounds from a timer Resistor codes A miniature light bulb to display voltage The inner workings of a switch Using batteries and resistors in series and parallel Creating sounds by the pressure of your finger Making a matchbox that beeps when you touch it And more. Grab your copy and start experimenting!
Download or read book Lina Bo Bardi Drawings written by Zeuler Lima and published by Princeton University Press. This book was released on 2019-05-28 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: Published on the occasion of an exhibition at the Fundaciâo Joan Mirâo, February 15-may 19, 2019.
Download or read book A Shared Legacy written by Emilia Calvo and published by Edicions Universitat Barcelona. This book was released on 2008 with total page 363 pages. Available in PDF, EPUB and Kindle. Book excerpt: On the occasion of the 75th +1 anniversary of the publication of Prof. J. M. Millàs Vallicrosa’s seminal work Assaig d’història de les idees físiques i matemàtiques a la Catalunya medieval by the Institut d'Estudis Catalans, the Commission on the History of Science and Technology in Islamic Societies (International Union on History and Philosophy of Science), the Grup Millàs Vallicrosa d’Història de la Ciència Àrab (Universitat de Barcelona) and the Societat Catalana d’Història de la Ciència i de la Tècnica (Institut d’Estudis Catalans) organized a conference entitled “A Shared Legacy: Islamic Science East and West”. At this conference, the Islamic Scientific Manuscripts Initiative, a new joint project for the study of manuscripts, was presented. .Although the papers published in this volume deal with a mixture of subjects and disciplines - astronomical instruments, planetary models, geometry, medicine, miqat, technology and cartography - they all have the transmission of knowledge between the two shores of the Mediterranean as a common underlying thread...Amb motiu del 75è + 1 aniversari de la publicació del llibre Assaig d’història de les idees físiques i matemàtiques a la Catalunya medieval (IEC), la Commission on the History of Science and Technology in Islamic Societies (CHSTIS/IUPHS), el Grup Millàs Vallicrosa d’Història de la Ciència Àrab de la Universitat de Barcelona (UB) i la Societat Catalana d’Història de la Ciència i de la Tècnica (SCHCT) -filial de l’Institut d’Estudis Catalans- organitzaren el congrés A Shared Legacy. Islamic Science East and West (Un llegat compartit: ciència islàmica a orient i occident). .Am motiu d’aquesta trobada s’han recopilat els articles que conté aquest volum tracten de temes variats –instruments astronòmics, models planetaris, geometria, medicina, tecnologia, cartografia, etc.- que tenen com a nexe en comú la transmissió del coneixement entre les dues ribes de la Mediterrània.
Download or read book Water Measurement Manual written by and published by . This book was released on 2001 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Anagram Solver written by Bloomsbury Publishing and published by Bloomsbury Publishing. This book was released on 2009-01-01 with total page 719 pages. Available in PDF, EPUB and Kindle. Book excerpt: Anagram Solver is the essential guide to cracking all types of quiz and crossword featuring anagrams. Containing over 200,000 words and phrases, Anagram Solver includes plural noun forms, palindromes, idioms, first names and all parts of speech. Anagrams are grouped by the number of letters they contain with the letters set out in alphabetical order so that once the letters of an anagram are arranged alphabetically, finding the solution is as easy as locating the word in a dictionary.
